基于子空间分解的毫米波导引头运动补偿方法

Motion Compensation for MMW Seeker Using Subspace Decomposition

对毫米波导引头的高精度运动补偿能够极大地改善目标一维距离成像以及目标识别的效果.本文针对Costas频率编码脉冲体制导引头,通过引入具有较强噪声抑制能力的子空间分解思想,提出了一种利用多帧回波数据对导引头与目标的径向运动速度进行高精度估计的方法.此外,结合分解所得信号子空间的特殊结构,对新方法的计算效率进行了进一步优化.仿真结果验证了新方法的优越性能.

Effective motion compensation for MMW seeker helps to improve the performance of 1-D range profile formation and target recognition.This paper focuses on the motion compensation for the Costas frequency coded pulse seeker,and exploits multi-frame data to propose a high-precision velocity estimation method using subspace decomposition.The computational efficiency of the proposed method is then further improved by taking the special structure of the subspace.Numerical simulations are carried out to verify the satisfying performance of the proposed methods.